Experimental Investigation and Load Capacity of Slender Cold-Formed Lipped Channel Sections with Holes in Compression

Table 5

Comparison on ultimate strength between the FEA results and predicted results using the modified method for columns with rectangular holes.

Specimen	L (mm)	h (mm)	b (mm)	a (mm)	t (mm)	fy (MPa)	S (mm)	Hole number	Hh (mm)	Lh (mm)	Pa (kN)	Pc (kN)	Pc/Pa
C8910-RH3-6	3000	89	40	13	1	280	500	6	26.7	53.4	9.20	9.07	0.99
C8910-RH3-3	1500	89	40	13	1	280	500	3	26.7	53.4	20.85	22.95	1.10
C8910-RH3-1	600	89	40	13	1	280		1	26.7	53.4	30.07	30.03	1.00
C8910-RH5-6	3000	89	40	13	1	280	500	6	44.5	89	8.58	8.84	1.03
C8910-RH5-3	1500	89	40	13	1	280	500	3	44.5	89	21.38	19.62	0.92
C8910-RH5-1	600	89	40	13	1	280		1	44.5	89	25.81	23.92	0.93
C7012-RH3-6	3000	70	35	11	1.2	350	500	6	21	42	7.64	7.07	0.93
C7012-RH3-3	1500	70	35	11	1.2	350	500	3	21	42	26.17	24.20	0.92
C7012-RH3-1	600	70	35	11	1.2	350		1	21	42	42.55	42.99	1.01
C7012-RH5-6	3000	70	35	11	1.2	350	500	6	35	70	7.19	6.93	0.96
C7012-RH5-3	1500	70	35	11	1.2	350	500	3	35	70	23.06	21.04	0.91
C7012-RH5-1	600	70	35	11	1.2	350		1	35	70	33.77	31.28	0.93
C10010-RH3-6	3000	100	50	12	1	550	500	6	30	60	13.56	13.30	0.98
C10010-RH3-3	1500	100	50	12	1	550	500	3	30	60	34.16	32.05	0.94
C10010-RH3-1	600	100	50	12	1	550		1	30	60	43.52	42.02	0.97
C10010-RH5-6	3000	100	50	12	1	550	500	6	50	100	13.14	13.02	0.99
C10010-RH5-3	1500	100	50	12	1	550	500	3	50	100	31.40	29.37	0.94
C10010-RH5-1	600	100	50	12	1	550	0	1	50	100	38.96	36.56	0.94
Average													0.965
Standard deviation													0.049
Coefficient of variation													0.051